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6408775 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

6408775: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: TITANIUM SEAT, special_features: FOR 5IN. BALL VALVE ;SEAWATER SERVICE; 3.940 IN .

ID IN. This part is cataloged in the U.S. Government catalog under NSN 4820-01-377-3878, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
6408775
NSN: 4820-01-377-3878
NIINs: 013773878, 013773879
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialTITANIUM SEAT
special_featuresFOR 5IN. BALL VALVE ;SEAWATER SERVICE; 3.940 IN . ID IN
NSN4820-01-377-3878
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6408775 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: TITANIUM SEAT
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESFOR 5IN. SWING CHECK TYPE VALVE; 6.720IN. OD X 1.575IN. THK. SEAWATER SERVICE IN
MATERIALTITANIUM SEAT
SUBSTITUTES & CROSS-REFERENCES 1
801-6408775-17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6408775?
6408775 is a SEAT,VALVE.
What parts can replace 6408775?
There is 1 known substitute for 6408775: 801-6408775-17. Substitute compatibility should be verified for your specific system.
What is the NSN for 6408775?
6408775 is cataloged in the U.S. Government catalog under NSN 4820-01-377-3878. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.